diff --git a/Source/Core/Common/GL/GLInterface/WGL.h b/Source/Core/Common/GL/GLInterface/WGL.h
index 8d77486247..b82a521b16 100644
--- a/Source/Core/Common/GL/GLInterface/WGL.h
+++ b/Source/Core/Common/GL/GLInterface/WGL.h
@@ -21,5 +21,6 @@ public:
 	void Update() override;
 	bool PeekMessages() override;
 
-	HWND m_window_handle;
+private:
+	HWND m_window_handle = nullptr;
 };